Question

convert the ratio 3:5 and 4:11 and 7:25 into percentage​

Answer 1

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According to problem:

a=1

d=2

∴Sn=2n[2a+(n−1)d]

          =2n[2+2n−2]

          =n2

∴Mean=nSn=nn2=n

Answer 2

Answer:

$\frac{3}{5} = \frac{3}{5} \times \frac{20}{20} = \frac{60}{100} = 60\% \\ \frac{4}{11} = ( \frac{4}{11} \times 100)\% = \frac{400}{11} \% = 36.36\% \\ \frac{7}{25} = \frac{7}{25} \times \frac{4}{4} = \frac{28}{100} = 28\%$

I hope this will help you to solve more question of this type.